See that is why I prefer the massage experience to an SP one. With the SP you know that it is all business. She will give you exactly what you paid for, in exchange for money. In a massage experience there are more variables at play like you list, and the bottom line is she has no obligation to give you anything more than a massage. There is actually a chance that she actually likes you(which will affect the experience obviously, or it does for me, whose main fetish is to be with a woman who enjoys being with me), and the other services are options she offers voluntarily. Nothing better than to have a nice FS with a woman you just KNOW doesn't need to do this to get customers coming back, and which does not involve an additional price. My FS experiences in the massage context never cost more than the usual GFE massage add on for nude, bodyslide alone.